Letters that make internal rhyme
a, e, l, n, h, m, r, t, i, y are letters that make 'internal rhyme'
Words within internal rhyme
ER, RH, rhyme, te, NT, intern, RN, inter, internal, in, ern, tern, AL, IN, ME, Al, Er, In, Rn, Rh, Na, Te, RNA are words within 'internal rhyme'